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ANAEROBIC ELEVATION OF ETHYLENE CONCENTRATION IN WATERLOGGED PLANTS
Author(s) -
Kawase Makoto
Publication year - 1978
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1978.tb06131.x
Subject(s) - helianthus annuus , ethylene , sunflower , anaerobic exercise , biology , lycopersicon , aeration , nitrogen , aerenchyma , botany , horticulture , agronomy , chemistry , ecology , physiology , biochemistry , organic chemistry , catalysis
Anaerobic elevation of ethylene concentration in waterlogged and non‐waterlogged Helianthus annuus L. and Lycopersicon esculentum Mill. was studied. A balloon method was devised to provide an anaerobic atmosphere around the intact sunflower stem. Anaerobic conditions were also produced by bubbling nitrogen into the floodwater. Ethylene concentration in the stem of waterlogged plants was higher when nitrogen was bubbled through the floodwater than when aerated, the effect being greater for the soil‐grown plants than for the sand‐cultured plants. Ethylene concentration in the stem of waterlogged plants was highest in the region exposed to anaerobiosis, and less with increasing distance or height on the non‐waterlogged part of the stems. Intact sunflower stems increased their ethylene concentration in that part of the stem which was maintained in an oxygen‐free atmosphere. The results suggest that enhanced ethylene production in waterlogged plants primarily occurs in the waterlogged part of roots and stems.